How to fix the Oracle error ORA-02329: column of datatype string cannot be unique or a primary key?

In this post, you’ll learn more about the Oracle ErrorORA-02329: column of datatype string cannot be unique or a primary key with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-02329: column of datatype string cannot be unique or a primary key

Reason for the Error ORA-02329: column of datatype string cannot be unique or a primary key

An attempt was made to place a UNIQUE or a PRIMARY KEY constraint on a column of datatype VARRAY, nested table, object, LOB, FILE or REF.

How to fix the Error ORA-02329: column of datatype string cannot be unique or a primary key ?

You can fix this error in Oracle by following the below steps

Change the column datatype or remove the constraint. Then retry the operation.